ICMPengine is a small library for sending non-privilged ICMP echo requests and recieving replies.
Key features include:
- Single IPv4 socket, and single IPv6 socket
- Does not wait for timeouts on packets, instead it can proceed to send more
- Single expiry timer
-
- Uses double linked list to track the soonest single expiry timer, rather than having many timers
-
- Currently because it uses https://golang.org/pkg/container/list all the expiry timers need to be the duration ( to allow inserting at the back of the list )
-
- ( Should move to https://golang.org/pkg/container/heap/ )
-
- ( Currently there is a single Expirer and linked list, but this could be sperated per protocol if required )
- Leverages the native golang https://golang.org/x/net/icmp library
- IPPROTO_ICMP sockets which are NonPrivilegedPing https://lwn.net/Articles/422330/
- Uses IP type https://pkg.go.dev/inet.af/netaddr, see also: https://tailscale.com/blog/netaddr-new-ip-type-for-go/
- https://golang.org/pkg/sync/#Pool is used for the receive buffers, although this may not be required
- Please note packet size and DSCP bits are NOT currently supported
- Performance testing across a low latency LAN showed ICMPengine can perform at least 60k pings in <15s
Although this is designed to be used as a library, a basic implmentation is demonstrated here: ./cmd/icmpengine/icmpengine.go
sudo sysctl -w net.ipv4.ping_group_range="0 2147483647"
| Dependancy | License | Link |
|---|---|---|
| Golang | BSD | https://golang.org/LICENSE |
| github.com/go-cmd/cmd v1.3.0 | MIT | https://github.com/go-cmd/cmd/blob/master/LICENSE |
| github.com/go-kit/kit v0.10.0 | MIT | https://github.com/go-kit/kit/blob/master/LICENSE |
| github.com/hashicorp/go-hclog v0.16.2 | MIT | https://github.com/hashicorp/go-hclog/blob/master/LICENSE |
| github.com/pkg/profile v1.6.0 | BSD | https://github.com/pkg/profile/blob/master/LICENSE |
| github.com/prometheus/client_golang v1.11.0 | Apache 2.0 | https://github.com/prometheus/client_golang/blob/master/LICENSE |
| golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985 | BSD | https://golang.org/LICENSE |
| inet.af/netaddr v0.0.0-20210721214506-ce7a8ad02cc1 | BSD-3 | https://pkg.go.dev/inet.af/netaddr?tab=licenses |
das@das-dell5580:~/go/src/gitlab.edgio.net/dseddon/icmpengine$ cat go.mod
module gitlab.edgio.net/dseddon/icmpengine
go 1.16
require (
github.com/go-cmd/cmd v1.3.0
github.com/go-kit/kit v0.10.0 // indirect
github.com/hashicorp/go-hclog v0.16.2
github.com/pkg/profile v1.6.0
github.com/prometheus/client_golang v1.11.0
golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985
inet.af/netaddr v0.0.0-20210721214506-ce7a8ad02cc1
)
How to tag
git tag
git tag -a v1.0.1 -m "v1.0.1"
git push origin --tags